, lance armstrong admitted to lying about using performance-enhancing drugs. >> he told oprah winfrey he began doping in the mid 1990s but insisted he stopped in 2005 before his comeback four years later. chip reid has the highlights from armstrong's confession. good morning. >> reporter: good morning, nora and charlie. after years of defiantly denying doping charges, armstrong admitted not only did he use performance-enhancing drugs throughout his cycling career he considered it part of his job. kind of like his regimen, like putting air in his bike tires or filling up his water bottle. >> i view this situation as one big lie. that i repeated a lot of times. >> reporter: lance armstrong told the world last night exactly how he cheated his way to seven tour de france titles. in an interview with oprah winfrey, he laid out his cocktail of choice blood transfusions, testosterone and the blood booster, epo. >> it did not even feel wrong. >> no. scary. >> he said he kept up the lie for more than a decade because he was caught up in his own legacy. the american hero.